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Table 3 Variables predicting total economic cost of nosocomial Pseudomonas aeruginosa isolates. Barcelona (Spain), 2005–2006, (N = 402)

From: Hospital costs of nosocomial multi-drug resistant Pseudomonas aeruginosa acquisition

Independent variable Coefficient (95% CI) P
Antibiotic susceptibility pattern    
 Non-resistant 1.00   
 Resistant 1.37 (1.08-1.72) 0.009
 Multi-drug resistant 1.77 (1.41-2.22) <0.001
Sex, male 1.12 (0.91-1.37) 0.277
Age 1.00 (0.98-1.00) 0.161
Source of infection    
 Respiratory 0.91 (0.67-1.22) 0.538
 Skin & soft tissue 0.85 (0.61-1.16) 0.311
 Genitourinary 0.96 (0.67-1.36) 0.827
Clinical conditions    
 Chronic obstructive pulmonary disease 0.79 (0.62-1.00) 0.045
 Solid neoplasm 1.00 (0.79-1.24) 0.979
 Diabetes mellitus 1.22 (0.96-1.55) 0.102
 Renal disease 0.85 (0.61-1.16) 0.313
 Liver disease 1.20 (0.87-1.65) 0.261
UCI stay post infection 3.46 (2.70-4.41) <0.001
Average total cost per DRG 1.43 (1.28-1.60) <0.001
In-hospital mortality 0.96 (0.75-1.21) 0.720